At 415 V it still holds 75.6 kA, dropping to 52.5 kA at 440 V and 11.9 kA at 690 V, so it's sized for high-fault industrial services where the available short-circuit current is substantial. The TM210 overcurrent release handles the thermal-magnetic trip curve. Rated continuous current stays flat at 50 A from 40 °C up to 50 °C ambient; above that it derates to 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. That derating curve matters if the breaker sits inside a warm enclosure — the 50 A nameplate is only good if the air around it stays under 50 °C.
It mounts into a standard distribution panel or enclosure — the 4-pole footprint with the TM210 release and the HQ auxiliary block fits the SENTRON 3VA cutout pattern.